1) Build a presentation in PowerPoint such that you have a Picture object (say labeled "SomePicture) and some other control like a TextBox on a slide, then place them in in a grouping. Then add some other object like another TextBox and place the first group and that new object in a group (you effectively have the Picture "SomePicture" in a nested group.

2) Use Syncfusion ASP.NET Core presentation library to open the presentation for manipulation. Attempt to use the Slide.Pictures API or Slide.Shapes API to remove the Picture "SomePicture".

Result

---------------FAIL - Unable to locate the picture in the Slide.Pictures collection. Also, any attempt to remove it using Slide.Shapes also fails (even though it can be seen as listed).

Thank you very much for your quick and accurate response. The code example you provided uses the API to successfully resolve my issue/scenario. I recommend this scenario and API usage be added to your documentation.